Continue CylinderScalingHelperTools implementation

- initialize with wrapped CylinderScalingFunctions
- better casting of scaling functions
- member function prototypes
- test() member function to see whether wrapping works
- bind new class into python

To be continued after testing.
Testing functions and output

To test the pythonified version of the helper tools class,
including passing testShell.ScalingFunctions as an argument and
using the scaling functions from the helper tools class.
Complete scaling functions pointer array

... and small correction to testing functions.